Russia, US, France rap Iran's nuclear 'escalation'

Iran's move to escalate uranium enrichment is unjustified because a draft nuclear deal it has snubbed lists guarantees for Tehran's benefit, according to a joint US-Russian-French letter obtained by Reuters on Tuesday.

The letter to UN nuclear watchdog IAEA was a response to Iran's launch last week of higher-grade enrichment - raising suspicions of a quest for atomic bomb capability - on grounds that world powers were imposing unpalatable terms for the deal. (Reuters)